Greg Callahan Details Cast On MovieCast On TV Name Greg Callahan Also Known As Birthday Gender Male IMDB Greg Callahan profile on IMDB Place of Birth As: the Governor1998-05-20Godzilla... As: Saltzman2014-10-17Default... As: Secretary of Defense2000-04-21Alien Fury: Countdow... As: Judge Nathan1998-04-09Shadow of Doubt... As: Rev. Franklin1993-09-16Frasier... As: Doctor1993-09-16Frasier... As: Dr. Gastner1984-01-22Airwolf... As: Mr. Benton1987-09-22Full House... As: Mr. Montgomery2001-09-24Crossing Jordan... As: NSA General1997-09-19The Visitor... As: Bank President1987-04-05Married... with Chil... As: Fake Dad2007-10-15Samantha Who?...